CFLib.org – long2ip

long2ip(longip)

Last updated January 9, 2009

author

Version: 0 | Requires: ColdFusion 8 | Library: NetLib

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Description:
Generates an (IPv4) Internet Protocol dotted address (aaa.bbb.ccc.ddd) from the proper address representation. Returns 0 if error occurs.

Return Values:
Returns the IP as a string.

Example:

long2ip(3401190660) = 202.186.13.4

Parameters:

Name	Description	Required
longip	Numeric version of IP address.	Yes

Full UDF Source:

	
	<cfscript>
/**
 * Generates an (IPv4) Internet Protocol dotted address (aaa.bbb.ccc.ddd) from the proper address representation.
 * 
 * @param longip      Numeric version of IP address. (Required)
 * @return Returns the IP as a string. 
 * @author Troy Pullis (tpullis@yahoo.com) 
 * @version 0, January 9, 2009 
 */
function long2ip(longip) {
    var ip = "";
    var i = "";
    if (longip < 0 || longip > 4294967295) 
        return 0;
    for (i=3;i>=0;i--) {
        ip = ip & int(longip / 256^i);
        longip = longip - int(longip / 256^i) * 256^i;
        if (i>0) 
            ip = ip & ".";
    }
    return ip;
}
</cfscript>